Regretted attrition rate: formula and meaning

Formula

Worked example

A product engineering company in Bengaluru had 340 employees on 1 April 2025 and 360 on 31 March 2026. Of the 42 people who left during the year, 15 were tagged as regretted: 9 were rated 4 or 5 in their last cycle, 4 held niche cloud skills and 2 were on the succession list for team lead roles.

1. Average headcount = (340 + 360) / 2 = 700 / 2 = 350
2. Regretted attrition = 15 / 350 x 100 = 4.29% (4.2857 rounded to 2 decimals)
3. Share of exits regretted = 15 / 42 x 100 = 35.71% (35.714 rounded to 2 decimals)
4. Overall attrition for comparison = 42 / 350 x 100 = 12%

Deciding who is a regretted exit

The metric is only as honest as the tagging behind it. Write the criteria down before anyone leaves: a recent rating in the top two bands, a critical skill listed by the department head, or a name on the succession plan. Tag each exit within a week of the resignation, with the manager and HR agreeing. Tagging months later, after the manager has moved on, tends to turn every loss into a non-regretted one.

• Regretted: strong performers, scarce skills, planned successors, key client relationships.
• Non-regretted: consistent low performers, roles being phased out.
• Involuntary exits are not regretted, because the company chose them.

Two ways to report it

Regretted attrition against average headcount tells you how much valued talent the company loses each year, and it can be tracked from one year to the next. The share of exits that were regretted describes the quality of attrition. Total attrition can fall while the regretted share rises, which means the wrong people are leaving. Show both figures, and compare each department with its own previous year rather than with teams that have a different role mix.

Pitfalls to avoid

A regretted attrition figure that stays near zero year after year usually signals weak tagging rather than excellent retention. Audit a sample of exits every quarter with the department head, and check each tag against ratings, the critical skills list and the succession plan.

• Letting the departing employee's manager decide alone, since few managers like admitting they lost a good person.
• Changing the criteria every year, which breaks the trend.
• Tagging after the exit interview, when the answers colour the judgement.
• Counting retirement or planned contract ends as regretted exits.

How to improve it

• Keep a current list of critical people and review it with each department head every quarter.
• Hold stay interviews with everyone on the list and follow up on what they ask for.
• Give strong performers visible growth: stretch projects, internal moves and a clear promotion timeline.
• Compare the pay of critical people with their grade range and correct gaps before the increment cycle.
• Ask the skip-level manager to meet people on the critical list whenever their manager changes.

Tracking it in ZeniaHR

ZeniaHR does not tag exits as regretted, so HR keeps that tag outside the system. Employee records give headcount and last working days, and offboarding records a structured reason for each exit. Performance holds review cycles with a rating scale and goals, which help define who counts as a strong performer. List the period's leavers from the previous employee list, add the regretted tag in a spreadsheet and calculate.

Frequently asked questions